Evidence map›Paper›PMID 34293087›Full record

Observational studyThe American journal of clinical nutrition2021

Nutrient composition of preterm mother's milk and factors that influence nutrient content.

Amy Gates, Terri Marin, Gianluca De Leo, Jennifer L Waller, Brian K Stansfield

Open access · greenAbstract readObservational Study
In one paragraph

Observational study in The American journal of clinical nutrition, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed, 1 pooled it
4.2field-weighted citation impact, top 5% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

21 citing papers in PubMed, 1 synthesis or guideline pooled it, 48 citations in OpenAlex.

  1. Pooled it
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  5. Review
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  12. Reply to B Stansfield.Advances in nutrition (Bethesda, Md.) · 2025
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  16. Early-life sodium deprivation programs long-term changes in ingestive behaviors and energy expenditure in C57BL/6J mice.American journal of physiology. Regulatory, integrative and comparative physiology · 2023
    Article
  17. Article
  18. Article
  19. Health disparities in preterm births.Frontiers in public health · 2023
    Article
  20. Sodium and Growth in Preterm Infants: A Review.Newborn (Clarksville, Md.) · 2023
    Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

5 authors at 2 institutions in 1 country.

Amy GatesCollege of Allied Health Sciences, Augusta University, Augusta, GA, USA.ORCID 0000-0001-5500-543X
Terri MarinCollege of Nursing, Augusta University, Augusta, GA, USA.
Gianluca De LeoCollege of Allied Health Sciences, Augusta University, Augusta, GA, USA.
Jennifer L WallerDivision of Biostatistics and Data Science, Department of Population Health Sciences, Medical College of Georgia, Augusta University, Augusta, GA, USA.
Brian K StansfieldDepartment of Pediatrics, Medical College of Georgia, Augusta University, Augusta, GA, USA.
Augusta University · USAugusta University Health · US

Funding

Inflammation and retinopathy of prematurityR01EY029318 · NEI · AUGUSTA UNIVERSITY · PI STANSFIELD, BRIAN KEVIN · 2019 to 2023
$2.2M
NEI NIH HHS R01 EY029318
6 · The paper itself

Abstract

backgroundBreast milk feedings are the optimal feeding choice for premature infants. Clinicians depend on accurate nutrient profiles of the breast milk in order to make informed decisions regarding the need for nutrient supplementation. Existing data for nutrient composition of preterm breast milk are dated and not representative of the current population of women delivering prematurely in the United States.

objectivesThe purpose of this prospective, longitudinal, single-center observational study was to measure the macronutrient and micronutrient composition of breast milk expressed by mothers, including women who self-identify as black, delivering preterm infants at ≤33 completed weeks of gestation.

methodsWe collected breast milk samples from mothers of preterm infants admitted to the neonatal intensive care unit at Augusta University Medical Center from January 2019 through November 2019. Mother's milk samples were collected on postpartum days 7, 14, 21, and 28 and analyzed for macronutrients (energy, fat, protein, and carbohydrates) and micronutrients (sodium, potassium, chloride, calcium, phosphorus, magnesium, vitamin D, and zinc).

resultsThirty-eight mothers, mean age 27 ± 5.1 y and majority black (66%), provided milk for the study. The mean estimated gestational age and birth weight were 28.2 ± 2.8 weeks of gestation and 1098 ± 347 g, respectively, with 42% of mothers in the cohort delivering before week 28 of pregnancy. Differences in protein, sodium, potassium, calcium, phosphorus, and zinc concentrations based on race, day, and milk volume were identified. Dilution effects for protein, sodium, chloride, and vitamin D concentrations over time were identified.

conclusionsOur study is among the first to characterize breast milk composition from women who delivered extremely preterm infants and adds to the evidence that race, gestational age, and volume influence the composition of preterm mother's milk. These factors should be considered when designing mother's milk-based feeds for premature infants.

Indexed as

AdolescentAdultFemaleGestational AgeHumansInfant, NewbornInfant Nutritional Physiological PhenomenaInfant, PrematureMicronutrientsMilk, HumanNutrientsPregnancyProspective StudiesYoung AdultMicronutrientsNutrientsAfrican Americanbreast milkcompositionfortificationhuman milknutrientspremature infant

Identifiers

PMID34293087
PMCPMC10157816
OpenAlexW3186829117

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.